:root {
  --text: #1a1f2b;
  --muted: #5a6577;
  --rule: #e4e7ec;
  --accent: #3a5675;
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --max: 56rem;
  --pad: 1.5rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 120ms ease;
}

a:hover { border-bottom-color: var(--accent); }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--rule);
  padding: 1.5rem 0;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand {
  font-weight: 600;
  letter-spacing: 0.02em;
  font-size: 1.15rem;
  color: var(--text);
  border: none;
}

.brand:hover { border: none; }

nav.primary a {
  color: var(--muted);
  margin-left: 1.75rem;
  font-size: 0.95rem;
}

nav.primary a:first-child { margin-left: 0; }

nav.primary a.is-current {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* Sections */
main { padding: 4rem 0 5rem; }

section + section { margin-top: 4rem; }

h1 {
  font-size: 2rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0 0 1.25rem;
  font-weight: 600;
}

h2 {
  font-size: 1.35rem;
  margin: 0 0 0.75rem;
  font-weight: 600;
}

p { margin: 0 0 1rem; }

.lead {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 42rem;
}

/* Capability grid */
.capabilities {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 2rem;
  margin-top: 1rem;
}

.capabilities article h2 {
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.capabilities article p {
  color: var(--muted);
  font-size: 0.97rem;
}

/* Closing note */
.note {
  border-top: 1px solid var(--rule);
  padding-top: 2rem;
  color: var(--muted);
  font-size: 0.95rem;
}

/* About / Contact specifics */
.section-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

ul.plain {
  list-style: none;
  padding: 0;
  margin: 0;
  color: var(--muted);
}

ul.plain li { padding: 0.25rem 0; }

.contact-block { margin-top: 1.5rem; }

.contact-block .email {
  font-size: 1.25rem;
  font-weight: 500;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--rule);
  padding: 2rem 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.55;
  text-align: center;
}

.site-footer p { margin: 0; }

@media (max-width: 38rem) {
  body { font-size: 16px; }
  h1 { font-size: 1.65rem; }
  .lead { font-size: 1.05rem; }
  nav.primary a { margin-left: 1.25rem; }
  main { padding: 2.5rem 0 3.5rem; }
}